Yukon Gear 4340 Chromoly Axle for Jeep Non-Rubicon JK Rear 30 spline 32in Long

Yukon Gear 4340 Chromoly Rear Axle for Jeep Wrangler JK Non-Rubicon Dana 44 30-Spline 32-Inch

The YA WD44JKNON-K from Yukon Gear and Axle is a 4340 chromoly rear axle shaft purpose-built for the Jeep Wrangler JK non-Rubicon Dana 44 rear differential. At 32 inches in length with 30 splines, the YA WD44JKNON-K is a direct replacement for the factory rear axle in 2007 through 2017 Jeep Wrangler JK models that did not receive the Rubicon's larger-diameter axle shafts. The non-Rubicon Dana 44 is the weakest link in a lifted or regeared JK build, and 4340 chromoly provides dramatically higher strength than the factory 1040 steel shaft, making it the standard upgrade for JK owners adding larger tires, a locker, or an engine performance build. Yukon precision-machines the spline and flange on the YA WD44JKNON-K to match the factory hub dimensions for direct installation, and backs it with a limited lifetime warranty.

Key Features and Benefits

• 4340 Chromoly Steel: Far stronger than OEM 1040 steel axle shafts, handling the added stress of lockers, large tires, and performance builds
• JK Non-Rubicon Specific: Engineered for 2007-2017 Wrangler JK non-Rubicon Dana 44 rear axles
• 30-Spline Count: Matches the non-Rubicon Dana 44 carrier exactly for direct-fit installation
• 32-Inch Length: Correct dimension for the non-Rubicon rear housing
• Kit Includes Both Sides: The K designation indicates this is a kit that includes both the driver and passenger axle shafts
• Precision Machined: Tight tolerances at the spline and flange ensure proper hub engagement and torque transfer
• Limited Lifetime Warranty: Yukon backs the YA WD44JKNON-K for the life of your ownership

Fitment

Specs

What Is Included

• Driver-side 4340 chromoly rear axle shaft (32 in, 30-spline)
• Passenger-side 4340 chromoly rear axle shaft (32 in, 30-spline)

Frequently Asked Questions

• Q: What Jeep model does the YA WD44JKNON-K fit?
  A: The YA WD44JKNON-K fits 2007 through 2017 Jeep Wrangler JK models equipped with the non-Rubicon Dana 44 rear differential, including Sport, Sahara, Unlimited Sport, and Unlimited Sahara trims. It also fits JK Rubicons whose rear Dana 44 accepts 30-spline shafts.
• Q: Does the Rubicon also use these axle shafts?
  A: The non-Rubicon JK and the Rubicon JK share the same rear Dana 44 housing. Verify your spline count before ordering; the YA WD44JKNON-K is designed for 30-spline applications.
• Q: Why upgrade from the factory JK rear axle shafts?
  A: The JK non-Rubicon Dana 44 uses 1040 steel rear axle shafts that are susceptible to twisting under high-horsepower builds, locker engagement, and large-tire torque loads. The YA WD44JKNON-K 4340 chromoly construction delivers far greater strength and torsional fatigue resistance.
• Q: Does this kit replace both axle shafts?
  A: Yes. The K in YA WD44JKNON-K indicates this is a kit that includes both the driver-side and passenger-side axle shafts for a complete rear axle upgrade.
• Q: Can the dealer void my JK warranty for installing these axle shafts?
  A: The Magnuson-Moss Warranty Act requires the dealer to prove that the YA WD44JKNON-K directly caused any failure. Simply installing stronger axle shafts is not grounds for a warranty denial.
• Q: Are these shafts compatible with an ARB, Eaton, or Detroit locker?
  A: Yes. The YA WD44JKNON-K is compatible with aftermarket lockers designed for the JK non-Rubicon Dana 44. The 4340 chromoly construction is well suited to the additional shock loads generated by locker engagement.
• Q: What warranty comes with the YA WD44JKNON-K?
  A: Yukon backs the YA WD44JKNON-K with a limited lifetime warranty against manufacturing defects for the original purchaser.
• Q: Is professional installation recommended?
  A: Replacing JK rear axle shafts is a straightforward procedure for any experienced Jeep shop or mechanic familiar with semi-float axle removal. Yukon recommends inspecting the wheel bearings, seals, and ABS reluctor rings during installation.

Installation Instructions

1. Safely lift and support the rear of the Jeep. Chock the front wheels.
2. Remove the rear wheels and brake drums or brake caliper and rotor.
3. On the axle housing, remove the axle flange retaining bolts and carefully slide each old axle shaft out of the housing.
4. Inspect the wheel bearing, seal, and ABS tone ring for wear or damage; replace as needed.
5. Slide the new YA WD44JKNON-K axle shaft into the housing, aligning the splines with the side gear.
6. Install the flange retaining bolts and torque in a star pattern to factory specification.
7. Reinstall brake components, ensuring all hardware is torqued to specification.
8. Reinstall the wheel and torque lug nuts to specification.
9. Repeat the procedure on the opposite side.
10. Verify differential fluid level and top off if needed.
11. Test drive to confirm no unusual noise, vibration, or ABS warning before returning to normal use.

Proposition 65 Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.